%0 Journal Article
%A E. V. Radkevich
%T Conditions for the existence of a transition zone
%J Doklady Akademii Nauk
%D 1988
%P 1323-1328
%V 299
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1988_299_6_a10/
%G ru
%F DAN_1988_299_6_a10